<!-- HTML header for doxygen 1.8.9.1-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.11"/>
<meta name="robots" content="NOINDEX, NOFOLLOW" /> <!-- Prevent indexing by search engines -->
<title>Compute Library: tests/validation/reference/FastCorners.cpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
  $(document).ready(initResizable);
  $(window).load(resizeHeight);
</script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
  $(document).ready(function() { init_search(); });
</script>
<script type="text/x-mathjax-config">
  MathJax.Hub.Config({
    extensions: ["tex2jax.js"],
    jax: ["input/TeX","output/HTML-CSS"],
});
</script><script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  <td style="padding-left: 0.5em;">
   <div id="projectname">Compute Library
   &#160;<span id="projectnumber">18.05</span>
   </div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.11 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
  <div id="navrow1" class="tabs">
    <ul class="tablist">
      <li><a href="index.xhtml"><span>Main&#160;Page</span></a></li>
      <li><a href="pages.xhtml"><span>Related&#160;Pages</span></a></li>
      <li><a href="namespaces.xhtml"><span>Namespaces</span></a></li>
      <li><a href="annotated.xhtml"><span>Data&#160;Structures</span></a></li>
      <li class="current"><a href="files.xhtml"><span>Files</span></a></li>
      <li>
        <div id="MSearchBox" class="MSearchBoxInactive">
        <span class="left">
          <img id="MSearchSelect" src="search/mag_sel.png"
               onmouseover="return searchBox.OnSearchSelectShow()"
               onmouseout="return searchBox.OnSearchSelectHide()"
               alt=""/>
          <input type="text" id="MSearchField" value="Search" accesskey="S"
               onfocus="searchBox.OnSearchFieldFocus(true)" 
               onblur="searchBox.OnSearchFieldFocus(false)" 
               onkeyup="searchBox.OnSearchFieldChange(event)"/>
          </span><span class="right">
            <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
          </span>
        </div>
      </li>
    </ul>
  </div>
  <div id="navrow2" class="tabs2">
    <ul class="tablist">
      <li><a href="files.xhtml"><span>File&#160;List</span></a></li>
      <li><a href="globals.xhtml"><span>Globals</span></a></li>
    </ul>
  </div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
  <div id="nav-tree">
    <div id="nav-tree-contents">
      <div id="nav-sync" class="sync"></div>
    </div>
  </div>
  <div id="splitbar" style="-moz-user-select:none;" 
       class="ui-resizable-handle">
  </div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('reference_2_fast_corners_8cpp_source.xhtml','');});
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div class="header">
  <div class="headertitle">
<div class="title">FastCorners.cpp</div>  </div>
</div><!--header-->
<div class="contents">
<a href="reference_2_fast_corners_8cpp.xhtml">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) 2017-2018 ARM Limited.</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * SPDX-License-Identifier: MIT</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * of this software and associated documentation files (the &quot;Software&quot;), to</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * deal in the Software without restriction, including without limitation the</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * sell copies of the Software, and to permit persons to whom the Software is</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * furnished to do so, subject to the following conditions:</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * The above copyright notice and this permission notice shall be included in all</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * copies or substantial portions of the Software.</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * SOFTWARE.</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_fast_corners_8h.xhtml">FastCorners.h</a>&quot;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="tests_2validation_2reference_2_utils_8h.xhtml">Utils.h</a>&quot;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="tests_2validation_2_helpers_8h.xhtml">tests/validation/Helpers.h</a>&quot;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_non_maxima_suppression_8h.xhtml">tests/validation/reference/NonMaximaSuppression.h</a>&quot;</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_asserts_8h.xhtml">tests/framework/Asserts.h</a>&quot;</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#include &lt;iomanip&gt;</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacearm__compute.xhtml">arm_compute</a></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;{</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="keyword">namespace </span>test</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;{</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="keyword">namespace </span>validation</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;{</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="keyword">namespace </span>reference</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;{</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="keyword">namespace</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;{</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;constexpr <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bresenham_radius = 3;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;constexpr <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bresenham_count  = 16;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment">    Offsets of the 16 pixels in the Bresenham circle of radius 3 centered on P</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment">        . . . . . . . . .</span></div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">        . . . F 0 1 . . .</span></div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">        . . E . . . 2 . .</span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">        . D . . . . . 3 .</span></div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment">        . C . . P . . 4 .</span></div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">        . B . . . . . 5 .</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">        . . A . . . 6 . .</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment">        . . . 9 8 7 . . .</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">        . . . . . . . . .</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="keyword">const</span> std::array&lt;std::array&lt;int, 2&gt;, 16&gt; circle_offsets =</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;{</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    {</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        { { 0, -3 } },  <span class="comment">// 0 - pixel #1</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        { { 1, -3 } },  <span class="comment">// 1 - pixel #2</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        { { 2, -2 } },  <span class="comment">// 2 - pixel #3</span></div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        { { 3, -1 } },  <span class="comment">// 3 - pixel #4</span></div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        { { 3, 0 } },   <span class="comment">// 4 - pixel #5</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        { { 3, 1 } },   <span class="comment">// 5 - pixel #6</span></div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        { { 2, 2 } },   <span class="comment">// 6 - pixel #7</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        { { 1, 3 } },   <span class="comment">// 7 - pixel #8</span></div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        { { 0, 3 } },   <span class="comment">// 8 - pixel #9</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        { { -1, 3 } },  <span class="comment">// 9 - pixel #10</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        { { -2, 2 } },  <span class="comment">// A - pixel #11</span></div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        { { -3, 1 } },  <span class="comment">// B - pixel #12</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        { { -3, 0 } },  <span class="comment">// C - pixel #13</span></div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        { { -3, -1 } }, <span class="comment">// D - pixel #14</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        { { -2, -2 } }, <span class="comment">// E - pixel #15</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        { { -1, -3 } }  <span class="comment">// F - pixel #16</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    }</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;};</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">    FAST-9 bit masks for consecutive points surrounding a corner candidate</span></div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">    Rejection of non-corners is expedited by checking pixels 1, 9, then 5, 13...</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="keyword">const</span> std::array&lt;uint16_t, 16&gt; fast9_masks =</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;{</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    {</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        0x01FF, <span class="comment">// 0000 0001 1111 1111</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        0x03FE, <span class="comment">// 0000 0011 1111 1110</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;        0x07FC, <span class="comment">// 0000 0111 1111 1100</span></div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        0x0FF8, <span class="comment">// 0000 1111 1111 1000</span></div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;        0x1FF0, <span class="comment">// 0001 1111 1111 0000</span></div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;        0x3FE0, <span class="comment">// 0011 1111 1110 0000</span></div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        0x7FC0, <span class="comment">// 0111 1111 1100 0000</span></div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        0xFF80, <span class="comment">// 1111 1111 1000 0000</span></div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        0xFF01, <span class="comment">// 1111 1111 0000 0001</span></div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        0xFE03, <span class="comment">// 1111 1110 0000 0011</span></div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        0xFC07, <span class="comment">// 1111 1100 0000 0111</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        0xF80F, <span class="comment">// 1111 1000 0000 1111</span></div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        0xF01F, <span class="comment">// 1111 0000 0001 1111</span></div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        0xE03F, <span class="comment">// 1110 0000 0011 1111</span></div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        0xC07F, <span class="comment">// 1100 0000 0111 1111</span></div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        0x80FF  <span class="comment">// 1000 0000 1111 1111</span></div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    }</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;};</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> in_range(<span class="keyword">const</span> uint8_t low, <span class="keyword">const</span> uint8_t high, <span class="keyword">const</span> uint8_t val)</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;{</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="keywordflow">return</span> low &lt;= val &amp;&amp; val &lt;= high;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;}</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> F&gt;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="keywordtype">bool</span> is_a_corner(<span class="keyword">const</span> Coordinates &amp;candidate, <span class="keyword">const</span> SimpleTensor&lt;T&gt; &amp;<a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a6743f0a130e8311e6f5b1a23df102472">src</a>, uint8_t <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a6cae310822a46019ba25a00ddb0f7e62">threshold</a>, <a class="code" href="namespacearm__compute.xhtml#a15a05537a472ee742404821851529327">BorderMode</a> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a5471e46933e7a9c4709972d91fc4ea65">border_mode</a>, T constant_border_value, F intensity_at)</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;{</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span> intensity_p   = <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a4f489943d8618d47b1ad4611f0b9b7ff">tensor_elem_at</a>(src, candidate, border_mode, constant_border_value);</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span> thresh_bright = intensity_p + <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a6cae310822a46019ba25a00ddb0f7e62">threshold</a>;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span> thresh_dark   = intensity_p - <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a6cae310822a46019ba25a00ddb0f7e62">threshold</a>;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <span class="comment">// Quicker rejection of non-corner points by checking pixels 1, 9 then 5, 13 around the candidate</span></div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span> p1  = intensity_at(candidate, 0);</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span> p9  = intensity_at(candidate, 8);</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span> p5  = intensity_at(candidate, 4);</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span> p13 = intensity_at(candidate, 12);</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <span class="keywordflow">if</span>((in_range(thresh_dark, thresh_bright, p1) &amp;&amp; in_range(thresh_dark, thresh_bright, p9))</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;       || (in_range(thresh_dark, thresh_bright, p5) &amp;&amp; in_range(thresh_dark, thresh_bright, p13)))</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    {</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    }</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    uint16_t mask_bright = 0;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    uint16_t mask_dark   = 0;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <span class="comment">// Set bits of the brighter/darker pixels mask accordingly</span></div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> n = 0; n &lt; bresenham_count; ++n)</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    {</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        T intensity_n = intensity_at(candidate, n);</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        mask_bright |= (intensity_n &gt; thresh_bright) &lt;&lt; n;</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        mask_dark |= (intensity_n &lt; thresh_dark) &lt;&lt; n;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    }</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    <span class="comment">// Mark as corner candidate if brighter/darker pixel sequence satisfies any one of the FAST-9 masks</span></div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span> found = std::find_if(fast9_masks.begin(), fast9_masks.end(), [&amp;](decltype(fast9_masks[0]) mask)</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    {</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;        <span class="keywordflow">return</span> (mask_bright &amp; mask) == mask || (mask_dark &amp; mask) == mask;</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    });</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    <span class="keywordflow">return</span> found != fast9_masks.end();</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;}</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;} <span class="comment">// namespace</span></div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00152"></a><span class="lineno"><a class="line" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8fdbdfcbf8a538569a6b7cd468eca939">  152</a></span>&#160;std::vector&lt;KeyPoint&gt; <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8fdbdfcbf8a538569a6b7cd468eca939">fast_corners</a>(<span class="keyword">const</span> <a class="code" href="classarm__compute_1_1test_1_1_simple_tensor.xhtml">SimpleTensor&lt;T&gt;</a> &amp;src, <span class="keywordtype">float</span> input_thresh, <span class="keywordtype">bool</span> suppress_nonmax, <a class="code" href="namespacearm__compute.xhtml#a15a05537a472ee742404821851529327">BorderMode</a> border_mode, T constant_border_value)</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;{</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    <span class="comment">// Get intensity of pixel at given index on the Bresenham circle around a candidate point</span></div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span> intensity_at = [&amp;](<span class="keyword">const</span> <a class="code" href="classarm__compute_1_1_coordinates.xhtml">Coordinates</a> &amp; point, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> idx)</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    {</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        <span class="keyword">const</span> <span class="keyword">auto</span>  <a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a> = circle_offsets[idx];</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;        <a class="code" href="classarm__compute_1_1_coordinates.xhtml">Coordinates</a> px{ point.<a class="code" href="classarm__compute_1_1_dimensions.xhtml#afb5cd37bb08f1029691590372e6330f0">x</a>() + <a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>[0], point.<a class="code" href="classarm__compute_1_1_dimensions.xhtml#a691c9cb93365c2e33f3429de43244098">y</a>() + <a class="code" href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a>[1] };</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a4f489943d8618d47b1ad4611f0b9b7ff">tensor_elem_at</a>(src, px, border_mode, constant_border_value);</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    };</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="keyword">const</span> <span class="keyword">auto</span>            threshold = <span class="keyword">static_cast&lt;</span>uint8_t<span class="keyword">&gt;</span>(input_thresh);</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    std::vector&lt;KeyPoint&gt; corners;</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    <span class="comment">// 1. Detect potential corners (the segment test)</span></div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    std::vector&lt;Coordinates&gt; corner_candidates;</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    <a class="code" href="classarm__compute_1_1test_1_1_simple_tensor.xhtml">SimpleTensor&lt;uint8_t&gt;</a>    scores(src.<a class="code" href="classarm__compute_1_1test_1_1_simple_tensor.xhtml#aba5871b3e4a65d057ec1c28fce8b00ba">shape</a>(), <a class="code" href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5">DataType::U8</a>);</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    <a class="code" href="structarm__compute_1_1_valid_region.xhtml">ValidRegion</a>              valid_region = <a class="code" href="namespacearm__compute_1_1test.xhtml#a8103df0e6c416f55f40106aa49072b42">shape_to_valid_region</a>(src.<a class="code" href="classarm__compute_1_1test_1_1_simple_tensor.xhtml#aba5871b3e4a65d057ec1c28fce8b00ba">shape</a>(), <a class="code" href="namespacearm__compute.xhtml#a15a05537a472ee742404821851529327a0db45d2a4141101bdfe48e3314cfbca3">BorderMode::UNDEFINED</a> == <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a5471e46933e7a9c4709972d91fc4ea65">border_mode</a>, <a class="code" href="structarm__compute_1_1_border_size.xhtml">BorderSize</a>(bresenham_radius));</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i &lt; src.<a class="code" href="classarm__compute_1_1test_1_1_simple_tensor.xhtml#aedcfdd4c3b92fe0d63b5463c7ad1d21e">num_elements</a>(); ++i)</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    {</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        <a class="code" href="classarm__compute_1_1_coordinates.xhtml">Coordinates</a> candidate = <a class="code" href="namespacearm__compute_1_1test.xhtml#a24d8c0391cfa38e78969b6ad97c0ff09">index2coord</a>(src.<a class="code" href="classarm__compute_1_1test_1_1_simple_tensor.xhtml#aba5871b3e4a65d057ec1c28fce8b00ba">shape</a>(), i);</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        scores[i]             = 0;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        <span class="keywordflow">if</span>(!<a class="code" href="namespacearm__compute_1_1test.xhtml#a856b55fc20ddcbdbeb84c35ae27bedac">is_in_valid_region</a>(valid_region, candidate))</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        {</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;            <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        }</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        <span class="keywordflow">if</span>(is_a_corner(candidate, src, threshold, border_mode, constant_border_value, intensity_at))</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        {</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;            corner_candidates.emplace_back(candidate);</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;            scores[i] = 1;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;        }</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    }</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;    <span class="comment">// 2. Calculate corner scores if necessary</span></div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <span class="keywordflow">if</span>(suppress_nonmax)</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;    {</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        <span class="keywordflow">for</span>(<span class="keyword">const</span> <span class="keyword">auto</span> &amp;candidate : corner_candidates)</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        {</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;            <span class="keyword">const</span> <span class="keyword">auto</span> index      = <a class="code" href="namespacearm__compute_1_1test.xhtml#a9be4cb7e6ee20063a4a10bc3abb750b9">coord2index</a>(scores.shape(), candidate);</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;            uint8_t    thresh_max = UINT8_MAX;</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;            uint8_t    thresh_min = <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a6cae310822a46019ba25a00ddb0f7e62">threshold</a>;</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;            uint8_t    response   = (thresh_min + thresh_max) / 2;</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;            <span class="comment">// Corner score (response) is the largest threshold for which the pixel remains a corner</span></div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;            <span class="keywordflow">while</span>(thresh_max - thresh_min &gt; 1)</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;            {</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                response = (thresh_min + thresh_max) / 2;</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;                <span class="keywordflow">if</span>(is_a_corner(candidate, src, response, border_mode, constant_border_value, intensity_at))</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;                {</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;                    thresh_min = response; <span class="comment">// raise threshold</span></div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;                }</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;                <span class="keywordflow">else</span></div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;                {</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                    thresh_max = response; <span class="comment">// lower threshold</span></div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;                }</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;            }</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;            scores[index] = thresh_min;</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        }</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;        scores       = <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a60e89e48713565425943913adec65294">non_maxima_suppression</a>(scores, border_mode, constant_border_value);</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;        valid_region = <a class="code" href="namespacearm__compute_1_1test.xhtml#a8103df0e6c416f55f40106aa49072b42">shape_to_valid_region</a>(scores.shape(), <a class="code" href="namespacearm__compute.xhtml#a15a05537a472ee742404821851529327a0db45d2a4141101bdfe48e3314cfbca3">BorderMode::UNDEFINED</a> == <a class="code" href="namespacearm__compute_1_1test_1_1validation.xhtml#a5471e46933e7a9c4709972d91fc4ea65">border_mode</a>, <a class="code" href="structarm__compute_1_1_border_size.xhtml">BorderSize</a>(bresenham_radius + 1));</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    }</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;    <span class="keywordflow">for</span>(<span class="keyword">const</span> <span class="keyword">auto</span> &amp;candidate : corner_candidates)</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    {</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;        <span class="keyword">const</span> <span class="keyword">auto</span> index = <a class="code" href="namespacearm__compute_1_1test.xhtml#a9be4cb7e6ee20063a4a10bc3abb750b9">coord2index</a>(scores.shape(), candidate);</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;        <span class="keywordflow">if</span>(scores[index] &gt; 0.f &amp;&amp; <a class="code" href="namespacearm__compute_1_1test.xhtml#a856b55fc20ddcbdbeb84c35ae27bedac">is_in_valid_region</a>(valid_region, candidate))</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;        {</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;            <a class="code" href="structarm__compute_1_1_key_point.xhtml">KeyPoint</a> corner;</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;            corner.<a class="code" href="structarm__compute_1_1_key_point.xhtml#af6d3062751bd565decb1a2cd3b63bdb2">x</a>               = candidate.x();</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;            corner.<a class="code" href="structarm__compute_1_1_key_point.xhtml#af64066d134a77e01b3d6eb8da813627a">y</a>               = candidate.y();</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;            corner.<a class="code" href="structarm__compute_1_1_key_point.xhtml#a2c1c8f9331368f38bfc3eaee260b59a6">strength</a>        = scores[index];</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;            corner.<a class="code" href="structarm__compute_1_1_key_point.xhtml#a8ca2aae59762685dd38143e5f8267147">tracking_status</a> = 1;</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;            corner.<a class="code" href="structarm__compute_1_1_key_point.xhtml#a1d28dec57cce925ad92342891bd71e7c">scale</a>           = 0.f;</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;            corner.<a class="code" href="structarm__compute_1_1_key_point.xhtml#a0e3266fc15309697502533db62b682af">orientation</a>     = 0.f;</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;            corner.<a class="code" href="structarm__compute_1_1_key_point.xhtml#a7cfd13d282af770aaa971755fa092fca">error</a>           = 0.f;</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;            corners.emplace_back(corner);</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;        }</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    }</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    <span class="keywordflow">return</span> corners;</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;}</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;<span class="keyword">template</span> std::vector&lt;KeyPoint&gt; <a class="code" href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8fdbdfcbf8a538569a6b7cd468eca939">fast_corners</a>(<span class="keyword">const</span> <a class="code" href="classarm__compute_1_1test_1_1_simple_tensor.xhtml">SimpleTensor&lt;uint8_t&gt;</a> &amp;src, <span class="keywordtype">float</span> threshold, <span class="keywordtype">bool</span> suppress_nonmax, <a class="code" href="namespacearm__compute.xhtml#a15a05537a472ee742404821851529327">BorderMode</a> border_mode, uint8_t constant_border_value);</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;} <span class="comment">// namespace reference</span></div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;} <span class="comment">// namespace validation</span></div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;} <span class="comment">// namespace test</span></div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;} <span class="comment">// namespace arm_compute</span></div><div class="ttc" id="namespacearm__compute_xhtml_a15a05537a472ee742404821851529327"><div class="ttname"><a href="namespacearm__compute.xhtml#a15a05537a472ee742404821851529327">arm_compute::BorderMode</a></div><div class="ttdeci">BorderMode</div><div class="ttdoc">Methods available to handle borders. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00283">Types.h:283</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_a4f489943d8618d47b1ad4611f0b9b7ff"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#a4f489943d8618d47b1ad4611f0b9b7ff">arm_compute::test::validation::tensor_elem_at</a></div><div class="ttdeci">T tensor_elem_at(const SimpleTensor&lt; T &gt; &amp;src, Coordinates coord, BorderMode border_mode, T constant_border_value)</div><div class="ttdef"><b>Definition:</b> <a href="tests_2validation_2reference_2_utils_8h_source.xhtml#l00061">Utils.h:61</a></div></div>
<div class="ttc" id="structarm__compute_1_1_key_point_xhtml_a1d28dec57cce925ad92342891bd71e7c"><div class="ttname"><a href="structarm__compute_1_1_key_point.xhtml#a1d28dec57cce925ad92342891bd71e7c">arm_compute::KeyPoint::scale</a></div><div class="ttdeci">float scale</div><div class="ttdoc">Scale initialized to 0 by the corner detector. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00440">Types.h:440</a></div></div>
<div class="ttc" id="tests_2validation_2reference_2_utils_8h_xhtml"><div class="ttname"><a href="tests_2validation_2reference_2_utils_8h.xhtml">Utils.h</a></div></div>
<div class="ttc" id="structarm__compute_1_1_border_size_xhtml"><div class="ttname"><a href="structarm__compute_1_1_border_size.xhtml">arm_compute::BorderSize</a></div><div class="ttdoc">Container for 2D border size. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00291">Types.h:291</a></div></div>
<div class="ttc" id="structarm__compute_1_1_key_point_xhtml_af6d3062751bd565decb1a2cd3b63bdb2"><div class="ttname"><a href="structarm__compute_1_1_key_point.xhtml#af6d3062751bd565decb1a2cd3b63bdb2">arm_compute::KeyPoint::x</a></div><div class="ttdeci">int32_t x</div><div class="ttdoc">X coordinates. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00437">Types.h:437</a></div></div>
<div class="ttc" id="structarm__compute_1_1_key_point_xhtml_a0e3266fc15309697502533db62b682af"><div class="ttname"><a href="structarm__compute_1_1_key_point.xhtml#a0e3266fc15309697502533db62b682af">arm_compute::KeyPoint::orientation</a></div><div class="ttdeci">float orientation</div><div class="ttdoc">Orientation initialized to 0 by the corner detector. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00441">Types.h:441</a></div></div>
<div class="ttc" id="_fast_corners_8h_xhtml"><div class="ttname"><a href="_fast_corners_8h.xhtml">FastCorners.h</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5"><div class="ttname"><a href="namespacearm__compute.xhtml#ab4e88c89b3b7ea1735996cc4def22d58a6669348b484e3008dca2bfa8e85e40b5">arm_compute::Format::U8</a></div><div class="ttdoc">1 channel, 1 U8 per channel </div></div>
<div class="ttc" id="structarm__compute_1_1_key_point_xhtml_a8ca2aae59762685dd38143e5f8267147"><div class="ttname"><a href="structarm__compute_1_1_key_point.xhtml#a8ca2aae59762685dd38143e5f8267147">arm_compute::KeyPoint::tracking_status</a></div><div class="ttdeci">int32_t tracking_status</div><div class="ttdoc">Status initialized to 1 by the corner detector, set to 0 when the point is lost. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00442">Types.h:442</a></div></div>
<div class="ttc" id="tests_2validation_2_helpers_8h_xhtml"><div class="ttname"><a href="tests_2validation_2_helpers_8h.xhtml">Helpers.h</a></div></div>
<div class="ttc" id="classarm__compute_1_1test_1_1_simple_tensor_xhtml_aba5871b3e4a65d057ec1c28fce8b00ba"><div class="ttname"><a href="classarm__compute_1_1test_1_1_simple_tensor.xhtml#aba5871b3e4a65d057ec1c28fce8b00ba">arm_compute::test::SimpleTensor::shape</a></div><div class="ttdeci">TensorShape shape() const override</div><div class="ttdoc">Shape of the tensor. </div><div class="ttdef"><b>Definition:</b> <a href="_simple_tensor_8h_source.xhtml#l00294">SimpleTensor.h:294</a></div></div>
<div class="ttc" id="helpers_8h_xhtml_a009469e4d9b8fce3b6d5e97d2077827d"><div class="ttname"><a href="helpers_8h.xhtml#a009469e4d9b8fce3b6d5e97d2077827d">offset</a></div><div class="ttdeci">__global uchar * offset(const Image *img, int x, int y)</div><div class="ttdoc">Get the pointer position of a Image. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00303">helpers.h:303</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml"><div class="ttname"><a href="namespacearm__compute.xhtml">arm_compute</a></div><div class="ttdoc">This file contains all available output stages for GEMMLowp on OpenCL. </div><div class="ttdef"><b>Definition:</b> <a href="00__introduction_8dox_source.xhtml#l00001">00_introduction.dox:1</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_xhtml_a9be4cb7e6ee20063a4a10bc3abb750b9"><div class="ttname"><a href="namespacearm__compute_1_1test.xhtml#a9be4cb7e6ee20063a4a10bc3abb750b9">arm_compute::test::coord2index</a></div><div class="ttdeci">int coord2index(const TensorShape &amp;shape, const Coordinates &amp;coord)</div><div class="ttdoc">Linearise the given coordinate. </div><div class="ttdef"><b>Definition:</b> <a href="tests_2_utils_8h_source.xhtml#l00448">Utils.h:448</a></div></div>
<div class="ttc" id="structarm__compute_1_1_key_point_xhtml"><div class="ttname"><a href="structarm__compute_1_1_key_point.xhtml">arm_compute::KeyPoint</a></div><div class="ttdoc">Keypoint type. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00435">Types.h:435</a></div></div>
<div class="ttc" id="_non_maxima_suppression_8h_xhtml"><div class="ttname"><a href="_non_maxima_suppression_8h.xhtml">NonMaximaSuppression.h</a></div></div>
<div class="ttc" id="structarm__compute_1_1_key_point_xhtml_a2c1c8f9331368f38bfc3eaee260b59a6"><div class="ttname"><a href="structarm__compute_1_1_key_point.xhtml#a2c1c8f9331368f38bfc3eaee260b59a6">arm_compute::KeyPoint::strength</a></div><div class="ttdeci">float strength</div><div class="ttdoc">Strength of the point. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00439">Types.h:439</a></div></div>
<div class="ttc" id="classarm__compute_1_1_dimensions_xhtml_afb5cd37bb08f1029691590372e6330f0"><div class="ttname"><a href="classarm__compute_1_1_dimensions.xhtml#afb5cd37bb08f1029691590372e6330f0">arm_compute::Dimensions::x</a></div><div class="ttdeci">T x() const </div><div class="ttdoc">Alias to access the size of the first dimension. </div><div class="ttdef"><b>Definition:</b> <a href="_dimensions_8h_source.xhtml#l00081">Dimensions.h:81</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_a5471e46933e7a9c4709972d91fc4ea65"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#a5471e46933e7a9c4709972d91fc4ea65">arm_compute::test::validation::border_mode</a></div><div class="ttdeci">border_mode</div><div class="ttdef"><b>Definition:</b> <a href="_c_l_2_convolution_8cpp_source.xhtml#l00133">Convolution.cpp:133</a></div></div>
<div class="ttc" id="structarm__compute_1_1_key_point_xhtml_a7cfd13d282af770aaa971755fa092fca"><div class="ttname"><a href="structarm__compute_1_1_key_point.xhtml#a7cfd13d282af770aaa971755fa092fca">arm_compute::KeyPoint::error</a></div><div class="ttdeci">float error</div><div class="ttdoc">Tracking error initialized to 0 by the corner detector. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00443">Types.h:443</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_xhtml_a856b55fc20ddcbdbeb84c35ae27bedac"><div class="ttname"><a href="namespacearm__compute_1_1test.xhtml#a856b55fc20ddcbdbeb84c35ae27bedac">arm_compute::test::is_in_valid_region</a></div><div class="ttdeci">bool is_in_valid_region(const ValidRegion &amp;valid_region, Coordinates coord)</div><div class="ttdoc">Check if a coordinate is within a valid region. </div><div class="ttdef"><b>Definition:</b> <a href="tests_2_utils_8h_source.xhtml#l00466">Utils.h:466</a></div></div>
<div class="ttc" id="classarm__compute_1_1_coordinates_xhtml"><div class="ttname"><a href="classarm__compute_1_1_coordinates.xhtml">arm_compute::Coordinates</a></div><div class="ttdoc">Coordinates of an item. </div><div class="ttdef"><b>Definition:</b> <a href="_coordinates_8h_source.xhtml#l00037">Coordinates.h:37</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_xhtml_a24d8c0391cfa38e78969b6ad97c0ff09"><div class="ttname"><a href="namespacearm__compute_1_1test.xhtml#a24d8c0391cfa38e78969b6ad97c0ff09">arm_compute::test::index2coord</a></div><div class="ttdeci">Coordinates index2coord(const TensorShape &amp;shape, int index)</div><div class="ttdoc">Convert a linear index into n-dimensional coordinates. </div><div class="ttdef"><b>Definition:</b> <a href="tests_2_utils_8h_source.xhtml#l00419">Utils.h:419</a></div></div>
<div class="ttc" id="structarm__compute_1_1_key_point_xhtml_af64066d134a77e01b3d6eb8da813627a"><div class="ttname"><a href="structarm__compute_1_1_key_point.xhtml#af64066d134a77e01b3d6eb8da813627a">arm_compute::KeyPoint::y</a></div><div class="ttdeci">int32_t y</div><div class="ttdoc">Y coordinates. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00438">Types.h:438</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a8fdbdfcbf8a538569a6b7cd468eca939"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a8fdbdfcbf8a538569a6b7cd468eca939">arm_compute::test::validation::reference::fast_corners</a></div><div class="ttdeci">std::vector&lt; KeyPoint &gt; fast_corners(const SimpleTensor&lt; T &gt; &amp;src, float input_thresh, bool suppress_nonmax, BorderMode border_mode, T constant_border_value)</div><div class="ttdef"><b>Definition:</b> <a href="reference_2_fast_corners_8cpp_source.xhtml#l00152">FastCorners.cpp:152</a></div></div>
<div class="ttc" id="classarm__compute_1_1test_1_1_simple_tensor_xhtml"><div class="ttname"><a href="classarm__compute_1_1test_1_1_simple_tensor.xhtml">arm_compute::test::SimpleTensor</a></div><div class="ttdoc">Simple tensor object that stores elements in a consecutive chunk of memory. </div><div class="ttdef"><b>Definition:</b> <a href="_simple_tensor_8h_source.xhtml#l00059">SimpleTensor.h:59</a></div></div>
<div class="ttc" id="classarm__compute_1_1_dimensions_xhtml_a691c9cb93365c2e33f3429de43244098"><div class="ttname"><a href="classarm__compute_1_1_dimensions.xhtml#a691c9cb93365c2e33f3429de43244098">arm_compute::Dimensions::y</a></div><div class="ttdeci">T y() const </div><div class="ttdoc">Alias to access the size of the second dimension. </div><div class="ttdef"><b>Definition:</b> <a href="_dimensions_8h_source.xhtml#l00086">Dimensions.h:86</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a60e89e48713565425943913adec65294"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a60e89e48713565425943913adec65294">arm_compute::test::validation::reference::non_maxima_suppression</a></div><div class="ttdeci">SimpleTensor&lt; T &gt; non_maxima_suppression(const SimpleTensor&lt; T &gt; &amp;src, BorderMode border_mode, T constant_border_value)</div><div class="ttdef"><b>Definition:</b> <a href="_non_maxima_suppression_8cpp_source.xhtml#l00038">NonMaximaSuppression.cpp:38</a></div></div>
<div class="ttc" id="namespacearm__compute_xhtml_a15a05537a472ee742404821851529327a0db45d2a4141101bdfe48e3314cfbca3"><div class="ttname"><a href="namespacearm__compute.xhtml#a15a05537a472ee742404821851529327a0db45d2a4141101bdfe48e3314cfbca3">arm_compute::BorderMode::UNDEFINED</a></div><div class="ttdoc">Borders are left undefined. </div></div>
<div class="ttc" id="classarm__compute_1_1test_1_1_simple_tensor_xhtml_aedcfdd4c3b92fe0d63b5463c7ad1d21e"><div class="ttname"><a href="classarm__compute_1_1test_1_1_simple_tensor.xhtml#aedcfdd4c3b92fe0d63b5463c7ad1d21e">arm_compute::test::SimpleTensor::num_elements</a></div><div class="ttdeci">int num_elements() const override</div><div class="ttdoc">Number of elements of the tensor. </div><div class="ttdef"><b>Definition:</b> <a href="_simple_tensor_8h_source.xhtml#l00386">SimpleTensor.h:386</a></div></div>
<div class="ttc" id="structarm__compute_1_1_valid_region_xhtml"><div class="ttname"><a href="structarm__compute_1_1_valid_region.xhtml">arm_compute::ValidRegion</a></div><div class="ttdoc">Container for valid region of a window. </div><div class="ttdef"><b>Definition:</b> <a href="arm__compute_2core_2_types_8h_source.xhtml#l00206">Types.h:206</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_1_1reference_xhtml_a6cae310822a46019ba25a00ddb0f7e62"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation_1_1reference.xhtml#a6cae310822a46019ba25a00ddb0f7e62">arm_compute::test::validation::reference::threshold</a></div><div class="ttdeci">SimpleTensor&lt; T &gt; threshold(const SimpleTensor&lt; T &gt; &amp;src, T threshold, T false_value, T true_value, ThresholdType type, T upper)</div><div class="ttdef"><b>Definition:</b> <a href="reference_2_threshold_8cpp_source.xhtml#l00035">Threshold.cpp:35</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_1_1validation_xhtml_a6743f0a130e8311e6f5b1a23df102472"><div class="ttname"><a href="namespacearm__compute_1_1test_1_1validation.xhtml#a6743f0a130e8311e6f5b1a23df102472">arm_compute::test::validation::src</a></div><div class="ttdeci">convolution configure &amp; src</div><div class="ttdef"><b>Definition:</b> <a href="_c_l_2_convolution_8cpp_source.xhtml#l00147">Convolution.cpp:147</a></div></div>
<div class="ttc" id="namespacearm__compute_1_1test_xhtml_a8103df0e6c416f55f40106aa49072b42"><div class="ttname"><a href="namespacearm__compute_1_1test.xhtml#a8103df0e6c416f55f40106aa49072b42">arm_compute::test::shape_to_valid_region</a></div><div class="ttdeci">ValidRegion shape_to_valid_region(const TensorShape &amp;a_shape, bool border_undefined=false, BorderSize border_size=BorderSize(0))</div><div class="ttdoc">Create a valid region based on tensor shape, border mode and border size. </div><div class="ttdef"><b>Definition:</b> <a href="tests_2_utils_8h_source.xhtml#l00222">Utils.h:222</a></div></div>
<div class="ttc" id="_asserts_8h_xhtml"><div class="ttname"><a href="_asserts_8h.xhtml">Asserts.h</a></div></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    <li class="navelem"><a class="el" href="dir_59425e443f801f1f2fd8bbe4959a3ccf.xhtml">tests</a></li><li class="navelem"><a class="el" href="dir_e7c7b16542faa38cb4655ff1750d3604.xhtml">validation</a></li><li class="navelem"><a class="el" href="dir_46fdb196cebdbffe77dac340cde62f29.xhtml">reference</a></li><li class="navelem"><a class="el" href="reference_2_fast_corners_8cpp.xhtml">FastCorners.cpp</a></li>
    <li class="footer">Generated on Wed May 23 2018 11:36:37 for Compute Library by
    <a href="http://www.doxygen.org/index.html">
    <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.11 </li>
  </ul>
</div>
</body>
</html>
